Fanuc 0 Alarms, Series ZERO Error Codes.
Fanuc 0 Alarms.
Please contact us if you need testing, a repair or an exchange part. For further product information please visit our dedicated Fanuc Systems Pages.
Background Edit Alarms
| Alarm Code | Description of Alarm/Error |
| ??? | BP/S alarm is produced with the same number as P/S alarm taking place in normal program editing. (070, 071, 072, 073, 074 etc) |
| 140 | An attempt was made to select or delete a program being selected in the foreground. |
Program P/S Alarms
| Alarm Code | Description of Alarm/Error |
| 000 | A parameter which requires the power off was input, turn off power. |
| 001 | TH alarm ( A character with incorrect parity was input. Correct the tape. |
| 002 | TV alarm ( The number if characters in a block is odd). This alarm will be generated only when the TV check is effective. Correct the tape. |
| 003 | Data exceeding the maximum allowable number of digits was input. (Refer to the item of max.programmable dimensions) |
| 004 | A numeral of the sign “-” was input without an address at the beginning of a block. |
| 005 | The address was not followed by the appropriate data but was not followed by another address or EOB code. |
| 006 | Sign “-” input error ( Sign “-” was input after an address with which it cannot be used. Or two or more “-” signs were input) |
| 007 | Â Decimal point “-” input error. |
| 009 | Â Unusable character was input insignificant area. |
| 010 | An unusable G code was commanded. |
| 011 | Feedrate was not commanded to a cutting feed or the feedrate was inadequate. |
| 014 | In variable lead threading the lead incremental and decremental outputted by address K exceed the maximum command value or a command such that the lead becomes a negative value is given. |
| 015 | The number of the commanded axes exceeded that of simultaneously controlled axes. |
| 021 | An axis not included in the selected plane was commanded in circular interpolation. |
| 023 | In circular interpolation by radius designation negative value was commanded for address R. |
| 029 | The offset value is too large. |
| 030 | The offset number specified by * code for tool length offset (or cutter compensation is too large.) |
| 031 | In setting an offset amount by G10, the offset number following address P was excessive or it was not specified. |
| 032 | In setting an offset amount by G10, the offset amount was excessive. |
| 033 | A point of intersection cannot be determined for cutter compensation C/ Tool nose radius compensation. |
| 034 | The start up or cancel was going to be performed in the G02 or G03 mode in cutter compensation C/tool nose radius compensation. |
| 035 | G39 is commanded in cutter compensation B cancel mode or on the plane other than offset plane/Ship cutting (G31 was specified in tool nose radius compensation mode. |
| 036 | Skip cutting (G31) was specified in cutter compensation mode. |
| 037 | G40 ( offset cancel) is commanded at the plane other than the offset plane in cutter compensation B. The plane selected by using G17, G18, G19 is changed in cutter compensation C mode. |
| 038 | Overcutting will occur in cutter compensation C because the arc start point or end point coincides with the arc centre/Overcutting will occur in tool nose radius compensation C because the arc start point or end point coincides with the arc centre/ |
| 039 | Chamfering or corner R was specified with a start up, a cancel, or switching between G41 and G42 in tool nose radius compensation. The program may cause overcutting to occur in chamfering or corner R. |
| 040 | Overcutting will occur in tool nose radius compensation in a canned cycle G90 or G94. |
| 041 | Overcutting will occur in cutter compensation C/ tool radius compensation. |
| 044 | One of G27 to G30 is commanded in canned cycle mode. |
| 050 | The chamfering or a corner R was specified in a block which includes a thread cutting command. |
| 051 | The block after a block containing a chamfering or a corner R specification was not a G01 command. |
| 052 | The move direction or the move amount in a block following chamfering or a corner R command was not adequate. |
| 053 | 2 or more of I, K and R are directed in chamfering and corner radius R command or C or R does not come after a comma (,) in direct drawing dimension programming. |
| 054 | A block in which the chamfering or the corner R was specified includes a taper command. |
| 055 | The move distance in the block which includes the chamfering or the corner R specification is smaller than the chamfering amount |
| 056 | Both end point and angle are not designated in the next block command of the angle designation block (A_). I (K) is commanded to X axis ( Z axis) in chamfering command. |
| 057 | Block end point is not calculated correctly in direct dimension drawing programming. |
| 058 | Block end point is not found in direct dimension drawing programming. |
| 059 | The program with the selected number cannot be searched in external program number search. |
| 060 | Commanded sequence number was not found in the sequence number search. |
| 061 | Address P or Q is not specified in G70, G71, G72 or G73 command. |
| 062 | The depth of cut in G71 or G72 is zero or negative value. The repetitive count in G73 is zero or negative value. The negative value is specified to A1 or Ak in G74 or G75. A value other than zero is specified to Ad, though the relief direction in G74 or G75 is determined. Zero on a negative value is specified to the height of thread of depth of cut of 1st time in G76. The specified minimum depth of cut in G76 is greater than the height of thread. An unusable angle of tool tip is specified in G76. |
| 063 | Â The sequence number specified by address P in G70, G71, G72 or G73 command cannot be searched. |
| 065 | G00 or G01Â is not commanded at the block with the sequence number which is specified in address P in G71, G72 or G73 command. Address Z (W) or X (U) was commanded in the block with a sequence number which is specified by address P in G71 or G72 respectively. |
| 066 | An allowable G code was commanded between two blocks specified by address P and Q in G71, G72, G73. |
| 067 | G70, G71, G72 or G73 command with address P and Q was specified in MDI mode. |
| 069 | The final move command in the blocks specified by P and Q of G70, G71, G72 and G73 ended with chamfering or corner R. |
| 070 | The memory area is insufficient. |
| 071 | The address to be searched was not found. Or the program with specified program number was not found in program number search. |
| 072 | The number of programs to be stored exceeded 63 or 125. |
| 073 | The commanded program number has already been used. |
| 074 | The program number is other than 1 to 9999. |
| 076 | Address P was not commanded in the block which includes an M98 or a G65 command. |
| 077 | The subprogram was called in three or five folds. |
| 078 | A program number or a sequence number which was specified by address P in the block which includes an M98, M99 or G66 was not found. |
| 079 | The contents of the program stored in the memory did not agree with that in tape in collection. |
| 080 | In the area specified by parameter E, the measuring position reach signal does not come on. |
| 081 | Automatic tool compensation was specified without a T code. |
| 082 | T code and automatic tool compensation were specified in the same block. |
| 083 | In automatic tool compensation an invalid axis was specified or the command is incremental. |
| 085 | When entering data in the memory by using ASR or Reader/puncher interface , an overrun, parity or framing error was generated. The number of bits or input data or setting of baud rate is incorrect. |
| 086 | When entering data in the memory by using Reader/puncher interface , the ready signal (DR) of reader/puncher was turned off/. |
| 087 | When entering data in the memory by using Reader/puncher interface , though the read terminate command is specified input is not interrupted after 10 characters read. |
| 090 | The reference point return cannot be performed normally because the reference point return start point is too close to the reference point or the speed is too slow. |
| 092 | The commanded axis by G27 did not return to the reference point. |
| 094 | Â P type cannot be specified when the program is restarted. |
| 095 | Â P type cannot be specified when the program is restarted. |
| 096 | Â P type cannot be specified when the program is restarted. |
| 097 | Â P type cannot be specified when the program is restarted |
| 098 | A command of the program restart was specified without the reference point return operation after power ON and emergency stop and G28 was found during search. |
| 099 | After completion of search in program restart, a move command is given with MDI. |
| 100 | Setting data PWE is set to 1. Turn it to 0 and reset the system. |
| 101 | The power was turned off while rewriting the contents of the memory in the part program storage and editing operation. When this alarm is generated set the data PWE to 1 and turn on the power while pushing DELETE to clear the memory. |
| 111 | The calculation result of macro instruction exceeds the allowable range. |
| 112 | Division by Zero was specified. ( including tan 90 degrees) |
| 114 | An undefined H code is designated in G65 block. |
| 115 | A value not defined as a variable number is designated. |
| 116 | The variable number designated with P is forbidden for assignment. |
| 119 | The argument of SQRT or BCD is negative. |
| 122 | The macro model call is specified in double. |
| 125 | In the block with G65, the unusable address was specified.. |
| 128 | The sequence number specified in the brand command was not 0 to 9999. Or, it cannot be searched. |
| 130 | In 3rd axis control, a 3rd axis control command was given by PMC during Cf control. On the contrary an attempt was made for spindle indexing. |
| 135 | Without any spindle orientation, an attempt was made for spindle indexing. |
| 136 | A move command of other axes was specified to the same block as spindle indexing addresses C, H. |
| 137 | A move command of other axes was specified to the same block as M code related to spindle indexing. |
Absolute Pulse Code (APC) Alarms
| Alarm Code | Type | Description of Alarm/Error |
| 3n0 | nth-axis origin return | Manual reference position is required for the nth axis. |
| 3n1 | APC alarm: nth axis communication | nth axis communication error. Failure in data transmission. |
| 3n2 | APC alarm: nth axis over time | nth axis APC overtime error. |
| 3n3 | APC alarm: nth axis framing | nth axis APC overtime error. Failure in data transmission. |
| 3n4 | APC alarm: nth axis parity | nth axis APC Paraity error. Failure in data transmission. |
| 3n5 | APC alarm: nth axis pulse error | nth axis APC pulse error alarm. |
| 3n6 | APC alarm: ntha xis battery voltage 0 | nth axis APC battery voltage has decreased to a low level so that data cannot be held. |
| 3n7 | APC alarm: nth axis battery low 1 | nth axis axis APC battery voltage reached a level where the battery must be renewed |
| 3n8 | APC alarm: nth axis battery low 2 | nth axis axis APC battery voltage reached a level where the battery must be renewed( including when power is OFF) |
| 3n9 | SPC ALARM: n AXIS PULSE CODER | The n axis ( axis 1-8) pulse coder has a fault. |
Servo Alarms
| Alarm Code | Type | Description of Alarm/Error |
| 400 | SERVO ALARM: 1, 2TH AXIS OVERLOAD | 1-axis, 2-axis overload signal is on. |
| 401 | SERVO ALARM: 1, 2TH AXIS VRDY OFF | 1-axis, 2-axis servo amplifier READY signal (DRDY) went off. |
| 402 | SERVO ALARM: 3, 4TH AXIS OVERLOAD | 3 axis, 4 axis overload signal is on. |
| 403 | SERVO ALARM: 3, 4TH AXIS VRDY OFF | 3-axis, 4 axis servo amplifier READY signal (DRDY) went off. |
| 404 | SERVO ALARM: n-TH AXIS VRDY ON | Even though the n-th axis ( axis 1-8) READY signal ( DRDY) is still on. Or, when the power was turned on, DRDY went on even though MCON was off. |
| 405 | SERVO ALARM: ZERO POINT RETURN FAULT | Position control system fault. |
| 406 | SERVO ALARM: 7, 8TH AXIS OVERLOAD 7TH, 8TH AXIS VRDY OFF | 7-axis, 8-axis overload signal is on. |
| 4n0 | SERVO ALARM: n-TH AXIS -EXCESS ERROR | The position deviation value when the n-th axis stops is larger than the set value. |
| 4n1 | SERVO ALARM: n-AXIS-EXCESS ERROR | The position deviation value when the n-th axis stops is larger than the set value. |
| 4n3 | SERVO ALARM: n-th AXIS -LSI OVERFLOW | The contents of the error register for the n-th axis exceeded power. |
| 4n4 | SERVO ALARM: n-TH AXIS DETECTION RELATED ERROR | N-th axis digital servo system fault. |
| 4n5 | SERVO AALRM: n-TH AXIS- EXCESS SHIFT | A speed higher than 4000000 units/s was attempted to be set in the n-th axis. |
| 4n6 | SERVO ALARM: n-TH AXIS -DISCONNECTION | Position detection system fault in the n-th axis pulse coder ( disconnecton alarm). |
| 4n7 | SERVO ALARM: n-TH AXIS-PARAMETER INCORRECT | This alarm occurs when the n-th axis is in one of the conditions below:
|
| 490 | SERVO ALARM: 5TH AXIS OVERLOAD | 5-axis, 6-axis overload signal is on. |
| 491 | SERVO ALARM: 5, 6TH AXIS VRDY ON | 5-axis, 6-axis servo amplifier READY signal (DRDY) went off. |
| 494 | SERVO ALARM: 5, 6TH AXIS VRDY ON | The axis card ready signal ( MCON) for axes 5 and 6 is off, but the servo amplifier ready signal (DRDY) is not. Alternatively when the power is applied, the DRDY is on and the MCON is not. |
| 495 | SERVO ALARM: 5, 6TH AXIS ZERO POINT RETURN | This is a position control circuit error. |
Overtravel Alarms
| Alarm Code | Description of Alarm/Error |
| 510 | Overtravel to exceed the (+) stroke limit of the X-axis |
| 511 | Overtravel to exceed the (-) stroke limit of the X-axis |
| 512 | 2nd stroke limit at + side of X axis was exceeded |
| 513 | 2nd stroke limit at + side of X axis was exceeded |
| 520 | Overtravel to exceed the (+) stroke limit of Y axis (M) or Z-axis (T) |
| 521 | Overtravel to exceed the (-) stroke limit of Y axis (M) or Z-axis (T) |
| 522 | 2nd stroke limit at + side of Z axis was exceeded |
| 523 | 2nd stroke limit at – side of X axis was exceeded |
| 530 | Overtravel to exceed the (+) stroke limit of Z-axis |
| 531 | Overtravel to exceed the (-) stroke limit of Z-axis |
| 540 | Overtravel to exceed the (+) stroke limit of the 4th axis |
| 541 | Overtravel to exceed the (-) stroke limit of the 4th axis |
Alarm in Fanuc PMC Model L/M
| Alarm Code | Description of Alarm/Error |
| 600 | Interruption by illegal command is occurred |
| 601 | PMC RAM parity error is occured |
| 602 | PMC serial transmission error is occurred |
| 603 | PMC watch dog error is occurred |
| 604 | PMC ROM parity error is occurred |
| 605 | LADDER contents which can be stored in PMC is exceeded |
Overheat Alarms
| Alarm Code | Description of Alarm/Error |
| 700 | Master PCB is overheated |
| 702 | X, Y, (M), or Z axis servo motor is overheated |
| 703 | 4th axis servo motor is overheated |
System Alarms
| Alarm Code | Type | Description of Alarm/Error |
| 910 | MAIN RAM PARITY | This RAM parity error is related to low-order-by-test. |
| 911 | MAIN RAM PARITY | This RAM parity error is related to the low-order bytes. |
| 912 | SHARED RAM PARITY | This RAM parity error is related to the low-order bytes of RAM shared with the digital servo circuit. |
| 913 | SHARED RAM PARITY | This parity error is related to high-order bytes of RAM shared with the digital servo cicuit. |
| 914 | SERVO RAM PARITY | This is a local RAM parity error in the digital servo circuit. |
| 915 | LADDER EDITING CASSETTE RAM PARITY | This RAM parity error is related to low order bytes of the ladder editing cassette. |
| 916 | LADDER EDITING CASSETTE RAM PARITY | This RAM parity error is related to the high order bytes of the ladder editing cassette. |
| 920 | WATCHDOG ALARM | This is a watchdog timer aalrm or a servo system alarm for axis 1 to 4. |
| 921 | SUB CPU WATCH DOG ALARM | This is a watchdog timer alarm related to the sub-CPU board or a servo system alarm for axis 5 or 6. |
| 922 | 7/8 AXIS SERVO SYSYTEM ALARM | This is a servo system alarm related to axis 7 or 8. |
| 930 | CPU ERROR | Replace the master PC board. |
| 940 | PC BOARD INSTALLATION ERROR | PC board installation is incorrect. Check the specification of the PC board. |
| 941 | MEMORY PC BOARD CONNECTION ERROR | The memory PC board is not connected securely. |
| 945 | SERIAL SPINDLE COMMUNICATION ERROR | The hardware configuration is incorrect for the serial spindle, or a communication alarm occured. |
| 946 | SECOND SERIAL SPINDLE COMMUNICATION ERROR | Communication is impossible with the second serial spindle. |
| 950 | FUSE BLOWN ALARM | A fuse has blown |
| 960 | SUB CPU ERROR | This is a sub-CPU error. |
| 998 | ROM PARITY | This is a ROM parity error. |